Swinging door.



W. T. WATBRSTRAAT.

SWINGING DOOR.

APPLICATION FILED MAY 13, 1907.

Patented Dec. 8, 1908.

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W. T. WATERSTRAAT.

SWIN GIN G DOOR.

APPLICATION FILED MAY 13, 1907.

Patented Dec. 8,

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mm mm m M I W. T. WATERSTRAAT.

SWINGING DOOR. APPLIGATION FILED MAY 13, 1907.

Patented Dec. 8, 1908 3 SHEETS-SHEET 3.

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Wairsfiraat ll'l i lilllllifi WILLIAM T. WATERSTRAAT, OF CHICAGO, ILLIh OIS.

Swindlers-r noon.

are. 906,175.

Specification of Letters Eatent.

Iatented Bee. 8, 1968.

Application filed May 13, 1907. Serial No. 373,278.

To all whomit may concern:

Be it known that 1, WILLIAM T. VVATER- STRAAT, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new'and useful Improvement in Swinging Doors, of which the following is a speci ication.

My invention relates to improvements in revolving doors of the class exemplified in United States Letters Patent, No. 836,843, dated November 27, 1906, to '1, Van Kammel. I

The variety of revolving door referred to involves vertical wings on a pivot centrally located in a casing within a door-way to prevent draft and to permit passage through the door-way without opening the door to the access of wind and dust, the casing comprising opposite segments between which the wings fit; and the wings are usually adapted to be 'folded together to collapse them in warm weather and in cases of emergency and thus leave open passages at their opposite 'SIdBS for permitt ng rapid ingress or egress through the door-way.

. The object of my invention is to provide improved means for releasably bracing the wings in their unfolded o crating condition.

In the accompanying trawings, Figure '1 shows a revolving door provided with my improvement by a view in sectional elevation with one of the win -braces represented in hanging position by dotted lines, the section being taken at line 1 on Fig.2 and regarded in the direction of the arrow; Fig. 2 is a section taken at the line 2 on Fig. 1 and viewed in the direction of the arrow, showing the wings braced by my improved means and equipped on their vertical edges with weatherstrlppmg; Fig. 3, a plan view showing the wings, removed from the casing, in their folded or collapsed condition, and equipped with my improved bracing means; Fig. 4, a broken, enlarged section taken at the line 4 on Fig. 1 and viewed in the direction of the arrow; Fig. 5, a View in elevation of the hinge-bar for the door-wing braces Fig. 6, an enlarged section taken. at the line 6 on Fig. 1 and viewed in the direction of the arrow showing the construction of the weatherstripping as provided on the edges of the wings; Fig. 7, an enlarged section taken at the line I on Fig. 1 and viewed in the direction of the arrow, showing the construction "of the weather-strip ping as applied to the up per edges of thedoor-wings, and Fig. 8, an

enlarged section taken at the line 8 on Fig. 1

and viewed in the direction of the arrow,

' and 15 are hinged together at their adjacent vertical edges, as indicated at 17, and the wings 13 and16 are similarly connected together, as represented at 18. The wings 13 and 15 are rigidly and permanently secured together in alining or substantially alining relation by a bar 19 securely fastened near its opposite ends to the opposite sides of these wings, as by screws (not shown) passing through'screw-holes 20 into the wings. This bar, as more clearly illustrated in Fig. 5, has a central thickened portion 21 containing a vertical opening through which the shaft 22 forming a pivot for the door, extends. Provided on the bar at opposite ends are lugs 23 each having a horizontal opening 24 through it, and in the bar adjacent to each lug and the opposite ends of its thickened-portion 21, openings 25 are formed. For supplementing the bar 19 in maintaining the wings in releasably extended braced condition and thereby to aid in strengthening the structure, flat metal braces 26, of general triangular shape and with convexly curved outer edges, are provided between the pairs of wings 13, '14 and 15, 16 respectively, each brace having preferably two spaced bearinglugs 27, which extend into the corresponding openings in the bar 19, the braces being pivoted to the bar at its opposite ends to adapt them to extend in opposite. directions be tween the corresponding wings, by rods 19 insertible through the lugs 23, bearing-lugs 27 and into the adjacent ends of the barportion 21. The free ends of the braces are thus adapted to be raised and lowered on the bar 19 as a hinge, and when raised to the horizontal position illustrated in Fig. 2, may be releasably fastened in place to the adjacort wings, for rigidly holding them in their properly spaced relation with reference to the doors carrying the braces, by any suitabld meafi. The means for the purpose shown consist of headed studs 14 and 16 projecting laterally from the Wings 14 and 16, respectively, into lposition to be engaged by corresponding soc ets 26 formed in the under sides of the braces near their outer. ends, when the braces are lowered into operative position.

The permanent bar-connection between the wings 13 and 15 serves to hold them rigidlyj in the alininjg relation referred to, regardless of the pessure which may be exerted against them when the door is; oper-l ated, and the braces 26, when the wings are unfolded, serve rigidly to maintain the wings 14 and 16 in the desired spaced relation to the wings 13 and 15. Thus by the use of only two braces, each wing is so rigidly braced that when the door is operated there will be no yielding of the wing pressed against, and, furthermore, continued operation of the door will not strain the brace-connections and impair the door structure.

When it is desired to unfold the wings to afi'ord unobstructed passage-ways through the door-way, the braces 26 are turned on their hinges to the depending position repre' sented by d6tted lines in Fig. 1, and the wings 14 and 16 are then turned on their hinge-connections to the positions indicated in Big. 3, thereby folding the braces between the wings and freeing the sides of the door of obstructions against free passage through the door-way. The flat shape of the braces prevents them from obstructing flat folding of the wings, and their curved outer edges avoid their projecting into the path of persons passing through the door-way by turning the wings.

As shown in the drawings, each wing is provided on its outer edge, top and bottom,

. with weather-stripping for engaging, respectively, with the top, bottom and sides of the casing 9. The weather-stripping for the outer vertical edges of each wlng, which is provided to be laterally adjustable thereon, to take up wear, comprises a strip 28 of flexible material, such as rubber, or the like,ex tending the full length of the edge of the wing to which it is applied, and having a contact-strip 29 of felt, or the like, fastened on its outer-edge portion. The stri 28 is confined at its inneredge, where it is eaded as shown at 30, in a vertical recess 31 of rectangular cross-section in the edge of the wing, by a strip 32 having a longitudinal recess 33 into whichthe bead 30 projects, and provided with transverse slots 34 through which screws 35 for clamping the rubber strip 28 between the wing-edge and the strip 32, extend. The strip 32 contains a longitudinal groove 36 along its inner edge which receives a bead 37 on a housin strip 38 releasably secured to the wing, as y screws 39, and bearing at one edge against the rubber strip 28 and at its opposite shouldered edge 1 against the wing-proper. Thus, if from wear or otherwise, it is desired to change the position of the weather-strippin on the wing, such adjustment may be rea ily effected by first removing the housing 38 and then loosening the screws 35 thereby permitting the stri 28 to be moved to the desired osition. hen the adjustment is eiiecte the screws 35 may again be tightened and the housing replaced.

The construction of weather-stripping shown for the top edge of each wing is as follows: Confined between the wing-proper and a strip 40 secured to the wing along its uppered e portion, are spiral springs 41 the free ent ls of which normally extend upwardly and bear against the under side of an angle-strip 42, whose sides form a seat for a strip 43, preferably of rubber, having its outer edge of curved sha e in cross-section. Secured to extend over t e top of the strip 40 and over the hinges 41, plate 42 and srip 43, to which latter it is seemed, as b tacks 45, is a strip 44 of felt, or the like, w ich extends the entire len th of the top edge of the wing. Thus these fe t strips, by reason of the spring construction provided, are constantly pressed against the top of the door-casing, and any wear on the felt is compensated for by the springs.

The weather-stri ping for the lower edges of the wings is simi ar to that just described for the top edges, excepting that in place of the strips 40, 43 and 44, a depending strip 46 of rubber, or the like, confined between the depending flange of the angle bar 42 and a strip 47 seated on the horizontal flange of the bar, is provided. Thus wear upon the contact-edge of the strip 46 is compensated for in the manner before described.

By providing the bar-connection between the wings 13 and 15, provision of but two cross-braces is required, thereby simplifying the construction and dispensing with tiose parts which, when the door-wings are folded,

would be in the way of personsusing the rethe other two wings hingedly connected with them, and braces hingedly supported on said bar to adapt them to be lowered on their hinges to permit folding the wings and to be extended into enga ement with the hinged wings for securing t em in their position of closure.

2. A four-winged revolvin door having a ada t them to be lowered to permit folding 10 bar rigidly connecting two of t e wings in subthe hinged wings and to be extended into enstantial elinement with each other, end the gagement with the other wings for securing other two wings hingedl supported to adept the four wings in their position of closure.

5 them to be swung in e endently of each other, said bar having ugs and openings, i WILLIAM WATERSTRAAT' rods supported in said ugs, and braces hav- I In presence of mg projections at which they are journaled W. B DAVIES, on said rods at the openings in the bar to R. A. SGHAEFER. 

